214 A. E. Verrill — New Actinians. 



inner side, near the end, a flake-white linear median spot or 

 line, with another like it near the middle, and a less evident 

 roundish white spot on the inside, near the base ; at the base, 

 on each side, there is a lunate spot of dark brown, the two 

 nearly meeting in front ; from each pair of these spots two 

 narrow lines of white, edged with orange, run toward the 

 mouth, but most of them do not quite reach it, but those of 

 the inner rows reach the lips. The disk is grayish white with 

 a halo of pale bluish around the mouth. 



This specimen was loosely attached to algse and probably 

 had been recently washed out of the sand by a storm. 



Another specimen from near New Haven (coll. J. D. Dana), 

 of about the same size, preserved in alcohol, has 24 pairs of 

 perfect mesenteries, nearly equally developed, two pairs being 

 directives. Between each pair of perfect ones there is a pair 

 of imperfect ones, about one-third as broad and with strong 

 muscles. In some places rudiments of another cycle can be 

 found. The longitudinal muscles of the perfect mesenteries 

 are strong and extend over most of their breadth, being most 

 thickened at about the inner third. Gonads are borne both 

 by the perfect and imperfect mesenteries. The wall is smooth, 

 thin, but tough, and somewhat parchment-like in alcohol, not 

 much wrinkled, though sometimes fluted longitudinally; the 

 mesenteries show through by transluceucy, as whitish lines. 

 In contraction, there is a thickened collar below the margin, 

 containing a rather strong, diffuse, mesogloeal sphincter muscle. 

 Between the collar and the margin the wall becomes very thin 

 and soft and is covered with numerous very small adhesive 

 papillae, or suckers. 



The mouth has two siphonoglyphs and about 12 principal 

 folds on each side with several other smaller ones, making 

 about 16. The tentacles number about 120 ; they form four 

 or five rows, the outer ones crowded. The marginal tentacles 

 are smaller than the inner ones, but not much shorter. The 

 basal disk is small, thin, and without a definite margin, the 

 limbus being obtusely rounded. 



This is one of the specimens figured by Professor J. D. Dana 

 (Coral Isl., p. 23), but his figure of the mesenteries is entirely 

 diagramatic and was not made from a section. 



Phelliopsis, gen. no v. Type P. Panamensis V. (See p. 144.) 



General appearance and habit as in Phellia. Column much 

 elongated, but capable of contraction to a short cylindrical, 

 pyriform, or ovate form and of infolding the summit so as to 

 conceal the tentacles, though these are often exposed in pre- 

 served specimens. Base with a well developed adhesive disk, 





